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Foster 2 Series Couplers

The Foster 2 Series is the miniature 1/8" body industrial interchange, built for low-volume air tools, instruments, and compact pneumatic systems. This collection includes 2 Series couplers and plugs in brass, steel, and stainless with NPT, hose barb, tube, and panel mount terminations. Filter by thread, material, and coupler or plug to find your exact part.

  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
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    $ 10.89
    $ 10.89 - $ 10.89
    $ 10.89
    $ 8.69
    $ 8.69 - $ 8.69
    $ 8.69

    Foster PJ8-2S/S, 1/8" 2 Series Plug x 1/4" Tube, 303 Stainless

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster PJ8-2S/S is a 303 Stainless 1/8" plug from the proven Foster 2 Series —...

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    $ 10.89
    $ 10.89 - $ 10.89
    $ 10.89
    $ 8.69
    $ 8.69 - $ 8.69
    $ 8.69
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 11.79
    $ 11.79 - $ 11.79
    $ 11.79
    $ 9.39
    $ 9.39 - $ 9.39
    $ 9.39

    Foster PJ8-2VM, 1/8" 2 Series Plug x 1/4" Soft Metal Tube, Brass Valve Core, Brass

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster PJ8-2VM is a Brass 1/8" plug from the proven Foster 2 Series — a miniat...

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    $ 11.79
    $ 11.79 - $ 11.79
    $ 11.79
    $ 9.39
    $ 9.39 - $ 9.39
    $ 9.39
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 9.79
    $ 9.79 - $ 9.79
    $ 9.79
    $ 7.79
    $ 7.79 - $ 7.79
    $ 7.79

    Foster PJ8-2M, 1/8" 2 Series Plug x 1/4" Soft Metal Tube, Steel

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster PJ8-2M is a Steel 1/8" plug from the proven Foster 2 Series — a miniatu...

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    $ 9.79
    $ 9.79 - $ 9.79
    $ 9.79
    $ 7.79
    $ 7.79 - $ 7.79
    $ 7.79
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  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
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    $ 10.59
    $ 10.59 - $ 10.59
    $ 10.59
    $ 8.49
    $ 8.49 - $ 8.49
    $ 8.49

    Foster PJ8-2VLV, 1/8" 2 Series Plug x 1/4" Plastic Tube, Less Valve, Steel

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster PJ8-2VLV is a Steel 1/8" plug from the proven Foster 2 Series — a minia...

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    $ 10.59
    $ 10.59 - $ 10.59
    $ 10.59
    $ 8.49
    $ 8.49 - $ 8.49
    $ 8.49
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
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    $ 29.59
    $ 29.59 - $ 29.59
    $ 29.59
    $ 23.69
    $ 23.69 - $ 23.69
    $ 23.69

    Foster PJ8-2V, 1/8" 2 Series Plug x 1/4" Plastic Tube, Brass Valve Core, Brass

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster PJ8-2V is a Brass 1/8" plug from the proven Foster 2 Series — a miniatu...

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    $ 29.59
    $ 29.59 - $ 29.59
    $ 29.59
    $ 23.69
    $ 23.69 - $ 23.69
    $ 23.69
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 10.09
    $ 10.09 - $ 10.09
    $ 10.09
    $ 8.09
    $ 8.09 - $ 8.09
    $ 8.09

    Foster PJ8-2, 1/8" 2 Series Plug x 1/4" Plastic Tube, Steel

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster PJ8-2 is a Steel 1/8" plug from the proven Foster 2 Series — a miniatur...

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    $ 10.09
    $ 10.09 - $ 10.09
    $ 10.09
    $ 8.09
    $ 8.09 - $ 8.09
    $ 8.09
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 8.09
    $ 8.09 - $ 8.09
    $ 8.09
    $ 6.49
    $ 6.49 - $ 6.49
    $ 6.49

    Foster 04-2, 1/8" 2 Series Plug x 1/4" Hose ID, Steel

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 04-2 is a Steel 1/8" plug from the proven Foster 2 Series — a miniature...

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    $ 8.09
    $ 8.09 - $ 8.09
    $ 8.09
    $ 6.49
    $ 6.49 - $ 6.49
    $ 6.49
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 21% Save %
    $ 4.19
    $ 4.19 - $ 4.19
    $ 4.19
    $ 3.29
    $ 3.29 - $ 3.29
    $ 3.29

    Foster 03-2, 1/8" 2 Series Plug x 3/16" Hose ID, Steel

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 03-2 is a Steel 1/8" plug from the proven Foster 2 Series — a miniature...

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    $ 4.19
    $ 4.19 - $ 4.19
    $ 4.19
    $ 3.29
    $ 3.29 - $ 3.29
    $ 3.29
    Save 21% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 5.39
    $ 5.39 - $ 5.39
    $ 5.39
    $ 4.29
    $ 4.29 - $ 4.29
    $ 4.29

    Foster 27-2, 1/8" 2 Series Plug x 1/4" Female NPT, Steel

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 27-2 is a Steel 1/8" plug from the proven Foster 2 Series — a miniature...

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    $ 5.39
    $ 5.39 - $ 5.39
    $ 5.39
    $ 4.29
    $ 4.29 - $ 4.29
    $ 4.29
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 19% Save %
    $ 3.09
    $ 3.09 - $ 3.09
    $ 3.09
    $ 2.49
    $ 2.49 - $ 2.49
    $ 2.49

    Foster 23-2, 1/8" 2 Series Plug x 1/8" Female NPT, Steel

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 23-2 is a Steel 1/8" plug from the proven Foster 2 Series — a miniature...

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    $ 3.09
    $ 3.09 - $ 3.09
    $ 3.09
    $ 2.49
    $ 2.49 - $ 2.49
    $ 2.49
    Save 19% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 21% Save %
    $ 4.29
    $ 4.29 - $ 4.29
    $ 4.29
    $ 3.39
    $ 3.39 - $ 3.39
    $ 3.39

    Foster 24-2, 1/8" 2 Series Plug x 1/4" Male NPT, Steel

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 24-2 is a Steel 1/8" plug from the proven Foster 2 Series — a miniature...

    View full details
    $ 4.29
    $ 4.29 - $ 4.29
    $ 4.29
    $ 3.39
    $ 3.39 - $ 3.39
    $ 3.39
    Save 21% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 6.09
    $ 6.09 - $ 6.09
    $ 6.09
    $ 4.89
    $ 4.89 - $ 4.89
    $ 4.89

    Foster 22-2S/S, 1/8" 2 Series Plug x 1/8" Male NPT, 303 Stainless

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 22-2S/S is a 303 Stainless 1/8" plug from the proven Foster 2 Series — ...

    View full details
    $ 6.09
    $ 6.09 - $ 6.09
    $ 6.09
    $ 4.89
    $ 4.89 - $ 4.89
    $ 4.89
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 21% Save %
    $ 4.29
    $ 4.29 - $ 4.29
    $ 4.29
    $ 3.39
    $ 3.39 - $ 3.39
    $ 3.39

    Foster 22-2B, 1/8" 2 Series Plug x 1/8" Male NPT, Brass

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 22-2B is a Brass 1/8" plug from the proven Foster 2 Series — a miniatur...

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    $ 4.29
    $ 4.29 - $ 4.29
    $ 4.29
    $ 3.39
    $ 3.39 - $ 3.39
    $ 3.39
    Save 21% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 19% Save %
    $ 2.59
    $ 2.59 - $ 2.59
    $ 2.59
    $ 2.09
    $ 2.09 - $ 2.09
    $ 2.09

    Foster 22-2, 1/8" 2 Series Plug x 1/8" Male NPT, Steel

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 22-2 is a Steel 1/8" plug from the proven Foster 2 Series — a miniature...

    View full details
    $ 2.59
    $ 2.59 - $ 2.59
    $ 2.59
    $ 2.09
    $ 2.09 - $ 2.09
    $ 2.09
    Save 19% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 14.29
    $ 14.29 - $ 14.29
    $ 14.29
    $ 11.39
    $ 11.39 - $ 11.39
    $ 11.39

    Foster SJ8P-2M, 1/8" 2 Series Coupler x 1/4" Soft Metal Tube, Panel Mount, Heavy-Duty Brass, Steel

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster SJ8P-2M is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foste...

    View full details
    $ 14.29
    $ 14.29 - $ 14.29
    $ 14.29
    $ 11.39
    $ 11.39 - $ 11.39
    $ 11.39
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 17.69
    $ 17.69 - $ 17.69
    $ 17.69
    $ 14.19
    $ 14.19 - $ 14.19
    $ 14.19

    Foster SJ8P-2W, 1/8" 2 Series Coupler x 1/4" Plastic Tube, Panel Mount, Heavy-Duty Brass, Stainless (Water)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster SJ8P-2W is a Heavy-Duty Brass, Stainless 1/8" coupler from the proven F...

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    $ 17.69
    $ 17.69 - $ 17.69
    $ 17.69
    $ 14.19
    $ 14.19 - $ 14.19
    $ 14.19
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 17.69
    $ 17.69 - $ 17.69
    $ 17.69
    $ 14.19
    $ 14.19 - $ 14.19
    $ 14.19

    Foster SJ8P-2HW, 1/8" 2 Series Coupler x 1/4" Plastic Tube, Panel Mount, Heavy-Duty Brass, Stainless (Hot Water)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster SJ8P-2HW is a Heavy-Duty Brass, Stainless 1/8" coupler from the proven ...

    View full details
    $ 17.69
    $ 17.69 - $ 17.69
    $ 17.69
    $ 14.19
    $ 14.19 - $ 14.19
    $ 14.19
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 19.39
    $ 19.39 - $ 19.39
    $ 19.39
    $ 15.59
    $ 15.59 - $ 15.59
    $ 15.59

    Foster BLSJ8P-2, 1/8" 2 Series Coupler x 1/4" Plastic Tube, Panel Mount, Heavy-Duty Brass, Steel (Ball Lock)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster BLSJ8P-2 is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Fost...

    View full details
    $ 19.39
    $ 19.39 - $ 19.39
    $ 19.39
    $ 15.59
    $ 15.59 - $ 15.59
    $ 15.59
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 14.29
    $ 14.29 - $ 14.29
    $ 14.29
    $ 11.39
    $ 11.39 - $ 11.39
    $ 11.39

    Foster SJ8P-2, 1/8" 2 Series Coupler x 1/4" Plastic Tube, Panel Mount, Heavy-Duty Brass, Steel

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster SJ8P-2 is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foster...

    View full details
    $ 14.29
    $ 14.29 - $ 14.29
    $ 14.29
    $ 11.39
    $ 11.39 - $ 11.39
    $ 11.39
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 45.79
    $ 45.79 - $ 45.79
    $ 45.79
    $ 36.69
    $ 36.69 - $ 36.69
    $ 36.69

    Foster SJ8-2S/S, 1/8" 2 Series Coupler x 1/4" Tube, 303 Stainless

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster SJ8-2S/S is a 303 Stainless 1/8" coupler from the proven Foster 2 Serie...

    View full details
    $ 45.79
    $ 45.79 - $ 45.79
    $ 45.79
    $ 36.69
    $ 36.69 - $ 36.69
    $ 36.69
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 12.09
    $ 12.09 - $ 12.09
    $ 12.09
    $ 9.69
    $ 9.69 - $ 9.69
    $ 9.69

    Foster SJ8-2M, 1/8" 2 Series Coupler x 1/4" Soft Metal Tube, Heavy-Duty Brass, Steel

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster SJ8-2M is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foster...

    View full details
    $ 12.09
    $ 12.09 - $ 12.09
    $ 12.09
    $ 9.69
    $ 9.69 - $ 9.69
    $ 9.69
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 17.09
    $ 17.09 - $ 17.09
    $ 17.09
    $ 13.69
    $ 13.69 - $ 13.69
    $ 13.69

    Foster BLSJ8-2, 1/8" 2 Series Coupler x 1/4" Plastic Tube, Heavy-Duty Brass, Steel (Ball Lock)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster BLSJ8-2 is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foste...

    View full details
    $ 17.09
    $ 17.09 - $ 17.09
    $ 17.09
    $ 13.69
    $ 13.69 - $ 13.69
    $ 13.69
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 12.29
    $ 12.29 - $ 12.29
    $ 12.29
    $ 9.89
    $ 9.89 - $ 9.89
    $ 9.89

    Foster SJ8-2, 1/8" 2 Series Coupler x 1/4" Plastic Tube, Heavy-Duty Brass, Steel

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster SJ8-2 is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foster ...

    View full details
    $ 12.29
    $ 12.29 - $ 12.29
    $ 12.29
    $ 9.89
    $ 9.89 - $ 9.89
    $ 9.89
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 35.09
    $ 35.09 - $ 35.09
    $ 35.09
    $ 28.09
    $ 28.09 - $ 28.09
    $ 28.09

    Foster 2042HW, 1/8" 2 Series Coupler x 1/4" Hose ID, Heavy-Duty Brass, Stainless (Hot Water)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 2042HW is a Heavy-Duty Brass, Stainless 1/8" coupler from the proven Fo...

    View full details
    $ 35.09
    $ 35.09 - $ 35.09
    $ 35.09
    $ 28.09
    $ 28.09 - $ 28.09
    $ 28.09
    Save 20% Save %